CN105524658A - Biomass fuel gas whole-process segmented purification method - Google Patents
Biomass fuel gas whole-process segmented purification method Download PDFInfo
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- CN105524658A CN105524658A CN201610011114.5A CN201610011114A CN105524658A CN 105524658 A CN105524658 A CN 105524658A CN 201610011114 A CN201610011114 A CN 201610011114A CN 105524658 A CN105524658 A CN 105524658A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/02—Fixed-bed gasification of lump fuel
- C10J3/20—Apparatus; Plants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/002—Removal of contaminants
- C10K1/003—Removal of contaminants of acid contaminants, e.g. acid gas removal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
- C10K1/026—Dust removal by centrifugal forces
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/04—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/20—Purifying combustible gases containing carbon monoxide by treating with solids; Regenerating spent purifying masses
- C10K1/205—Methods and apparatus for treating the purifying masses without their regeneration
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0916—Biomass
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0956—Air or oxygen enriched air
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
Abstract
The invention discloses a biomass fuel gas whole-process segmented purification method. The key points of the technical scheme are that biomass briquette fuel pyrolysis is accelerated with oxygen-enriched gas; fuel gas flows through a pipe, and enters a diffusion-type cyclone dust collector; the gas flows through a cyclone packing-type dedusting tower; underground water is subjected to heat exchange with high-temperature fuel gas, such that the temperature of the fuel gas flow is gradually reduced to below 30 DEG C, and fuel gas flow quality is further purified; and the fuel gas is stored in a gas storage tank. Therefore, equipment service life is protected and prolonged, and fuel gas liquid condensation is improved. After purification, fuel gas outlet tar content is lower than 30mg/m<3>. With the biomass fuel gas whole-process segmented purification method, furnace temperature can be increased, such that pyrolysis can be accelerated; fuel gas temperature can be reduced, such that liquid condensation can be accelerated. Through enhanced absorption of filtering layers, tar content index in the fuel gas is greatly lower than a national industry standard. The biomass fuel gas whole-process segmented purification method is suitable for whole-process purification of fixed bed gasification furnace fuel gas.
Description
Technical field
The present invention relates to biomass gasification technology field, be specifically related to the method for the omnidistance sectional type purification of a kind of biological fuel gas.
Background technology
The Energy resources that agricultural-forestry biomass is exactly always the production of the mankind, life, existence rely on.To today of 21 century, when disposable fossil energy quantity is fewer and feweri, harm environment is more and more serious time, each state all successively science and technology and economic force, puts in biomass energy development and utilization.
China is biomass output big country of the world, and having agricultural-forestry biomass total amount about has more than 900,000,000 ton.In the face of national energy shortage and the serious dual-pressure of environmental pollution, biomass energyization utilizes as national energy development strategy by China.
Preparing fuel gas by gasifying in biomass thermal chemical process is the biomass energy conversion regime of a kind of advanced person.It presses gasifying medium kind, can be divided into the methods such as the gasification of air gasification, steam gasification, oxygen separation membrane, oxygen-rich gasification.
Present commonplace application gasification technology utilizes air to produce combustible gas as gasifying medium.Thisly utilize technology, there is economy and convenience.
But owing to containing a large amount of N2 in air, cause biomass combustion calorific value (4-6kj/m3) on the low side; Because calorific value is on the low side, cause charing insufficient, in combustion gas, there is dust granules, cause the coal-tar middle oil content of combustion gas higher (>=60mg/m3), cause line clogging.
Just because gas-purification is bad, foreign matter content is more, causes terminal combustion gas to utilize device often can cause stopping production, brings inconvenience and financial loss to user.This has had a strong impact on applying of Gasification Technology.Therefore, the combustion gas of decontamination of biological matter, for improving the function of downdraft fixed-bed gasification furnace, improving the degree of cleaning of combustion gas, the continuous prodution realizing large-scale project has vital role.
Summary of the invention
The object of the invention is to overcome weak point in prior art, the method for the omnidistance sectional type purification of a kind of biological fuel gas is provided.
Because powdered carbon particle, acidic liquid and the tar in combustion gas produces in biomass pyrolysis process, therefore gas-purification also must the carrying out of whole process sectional type.
The present invention is achieved by following technical proposals:
The method of the omnidistance sectional type purification of biological fuel gas:
1, in fixed-bed gasification furnace, biomass molding fuel is added from opening for feed, utilize the oxygen rich gas that oxygen-rich gasification producer produces, make furnace temperature remain on 1050 ~ 1150 DEG C, meanwhile, by roots blower, fuel gas flow is transported to proliferation cyclone from gas outlet.
2, water circulating pump is started, allow in the water jacket device of water coolant outside fuel gas transportation pipeline and flow, with guide at roots blower under the fuel gas flow be transported in pipeline do countercurrent flow, thus siphon away the heat of fuel gas flow, rapidly fuel gas flow temperature dropped to 150 ~ 160 DEG C.
3, under roots blower continues guiding, with dust granules in fuel gas flow, enter proliferation cyclone by pipeline, again through whirlwind material filling type gas wash tower, allow tiny dust and fly-ash separator inwall clash into, thus lose vigor, fall bottom whirlwind material filling type gas wash tower; Meanwhile, water coolant and high-temperature fuel gas air-flow proceed thermal exchange, allow fuel gas flow temperature drop to 80 ~ 90 DEG C.
4, in combustion gas after dedusting, continuation water coolant and high-temperature fuel gas air-flow carry out heat exchange, allow fuel gas flow temperature drop to 50 ~ 60 DEG C; H2O in water vapor in fuel gas flow, Mierocrystalline cellulose, hemicellulose and xylogen is atomized into weak acid molecule, under roots blower continues guiding, sends into acetic acid and collects tower; Owing to collecting tower wall internal-external temperature difference, allow the weak acid molecule in fuel gas flow be condensed into the globule in tower, under drip to acetic acid and collect tower bottom.
5, under Roots's machine wind continues guiding, after the fuel gas flow after dedusting, solidifying acid enters the 1st tar collection tower, then enter the 2nd tar collection tower, carry out thermal exchange with water coolant and high-temperature fuel gas air-flow, fuel gas flow temperature drops to 25 ~ 35 DEG C simultaneously.
6, fuel gas flow collects the filtering layer filtration arranged in tower by 2 tar, allow tiny molecule tar in fuel gas flow, there is repeatedly chance, fully contact with the filtering layer disorderly without chapter, thus got on by absorption, fuel gas flow quality is further purified, sends in gas-holder and store for future use, the waste residue after biomass molding fuel burning is discharged from slag notch.
Adopt the method for the omnidistance sectional type purification of this biological fuel gas, biomass molding fuel is added in fixed-bed gasification furnace, and utilize oxygen-rich gasifying agent, furnace temperature is made to remain on 1050 ~ 1150 DEG C, thus accelerate the pyrolysis of biomass molding fuel, charcoal is accelerated oxidation, and tar is accelerated cracking, causes the tar in fuel gas flow, powdered carbon particle all can reduce by the generating capacity of more than 2/3.
Fuel gas flow enters proliferation cyclone by pipeline, again through whirlwind material filling type gas wash tower, allows tiny dust and fly-ash separator inwall clash into, thus lose vigor, fall bottom fly-ash separator.
The body that fly-ash separator, liquid collecting tower, tar collect tower makes water jacket.By carrying out heat exchange with underground water and high-temperature fuel gas; fuel gas flow temperature is allowed progressively to drop to 160 DEG C, 90 DEG C, 60 DEG C, less than 35 DEG C; both protected the life-span with extension device, and contributed to again the liquid condensation in combustion gas, the gas outlet tar content after purification is less than 30mg/m3.
The method of the omnidistance sectional type purification of biological fuel gas can improve furnace temperature and accelerate cracking, reduces fuel gas temperature to accelerate cohesion, is adsorbed, make the coal-tar middle oil content's index of combustion gas far below national sector standard by the reinforcement of filtering net, not polluted water discharge.
The method of the omnidistance sectional type purification of biological fuel gas, is applicable to the whole process purification of fixed-bed gasification furnace combustion gas.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the omnidistance sectional type purification of biological fuel gas,
As shown in the figure: 1 is biomass molding fuel, 2 is oxygen-rich gasification producers, and 3 is water coolants, 4 is water circulating pumps, and 5 is water jacket devices, and 6 is fixed-bed gasification furnaces, 7 is opening for feeds, and 8 is slag notches, and 9 is gas outlets, 10 is proliferation cyclones, and 11 is whirlwind material filling type gas wash towers, and 12 is that tower collected by acetic acid, 13 is that the 1st tar collects tower, and 14 is that the 2nd tar collects tower, and 15 is filtering layers, 16 is roots blowers, and 17 is gas-holder.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
The method of the omnidistance sectional type purification of biological fuel gas:
1, in fixed-bed gasification furnace 6, biomass molding fuel is added from opening for feed 7, utilize the oxygen rich gas that oxygen-rich gasification producer 2 produces, make furnace temperature remain on 1050 ~ 1150 DEG C, meanwhile, by roots blower 16, fuel gas flow is transported to proliferation cyclone 10 from gas outlet 9.
2, water circulating pump 4 is started, allow in the water jacket device 5 of water coolant 3 outside fuel gas transportation pipeline and flow, with guide at roots blower 16 under the fuel gas flow be transported in pipeline do countercurrent flow, thus siphon away the heat of fuel gas flow, rapidly fuel gas flow temperature dropped to 150 ~ 160 DEG C.
3, under roots blower 16 continues guiding, with dust granules in fuel gas flow, enter proliferation cyclone 10 by pipeline, again through whirlwind material filling type gas wash tower 11, allow tiny dust and fly-ash separator inwall clash into, thus lose vigor, fall bottom whirlwind material filling type gas wash tower 11; Meanwhile, water coolant 3 and high-temperature fuel gas air-flow proceed thermal exchange, allow fuel gas flow temperature drop to 80 ~ 90 DEG C.
4, in combustion gas after dedusting, continuation water coolant 3 and high-temperature fuel gas air-flow carry out heat exchange, allow fuel gas flow temperature drop to 50 ~ 60 DEG C; H2O in water vapor in fuel gas flow, Mierocrystalline cellulose, hemicellulose and xylogen is atomized into weak acid molecule, under roots blower 16 continues guiding, sends into acetic acid and collects tower 12; Owing to collecting tower wall internal-external temperature difference, allow the weak acid molecule in fuel gas flow be condensed into the globule in tower, drip to acetic acid and collect bottom tower 12.
5, under Roots's machine wind 16 continues guiding, after fuel gas flow after dedusting, solidifying acid enters the 1st tar collection tower 13, enter the 2nd tar again and collect tower 14, carry out thermal exchange with water coolant 3 and high-temperature fuel gas air-flow, fuel gas flow temperature drops to 25 ~ 35 DEG C simultaneously.
6, fuel gas flow is filtered by the multiple layers of filters 15 arranged in 2 tar collection towers, allow tiny molecule tar in fuel gas flow, there is repeatedly chance, fully contact with the filtering layer disorderly without chapter, thus got on by absorption, fuel gas flow quality is further purified, sends in gas-holder 17 and store for future use, the waste residue after biomass molding fuel 1 burns is discharged from slag notch 8.
Claims (1)
1. a method for the omnidistance sectional type purification of biological fuel gas, is characterized in that:
(1) in fixed-bed gasification furnace, add biomass molding fuel from opening for feed, the oxygen rich gas utilizing oxygen-rich gasification producer to produce, make furnace temperature remain on 1050 ~ 1150 DEG C; Meanwhile, by roots blower, fuel gas flow is transported to proliferation cyclone from gas outlet;
(2) start water circulating pump, allow in the water jacket device of water coolant outside fuel gas transportation pipeline and flow, with guide at roots blower under the fuel gas flow be transported in pipeline do countercurrent flow, thus siphon away the heat of fuel gas flow, rapidly fuel gas flow temperature dropped to 150 ~ 160 DEG C;
(3) under roots blower continues guiding, with dust granules in fuel gas flow, enter proliferation cyclone by pipeline, again through whirlwind material filling type gas wash tower, allow tiny dust and fly-ash separator inwall clash into, thus lose vigor, fall bottom whirlwind material filling type gas wash tower; Meanwhile, water coolant and high-temperature fuel gas air-flow proceed thermal exchange, allow fuel gas flow temperature drop to 80 ~ 90 DEG C;
In combustion gas after dedusting, continuation water coolant and high-temperature fuel gas air-flow carry out heat exchange, allow fuel gas flow temperature drop to 50 ~ 60 DEG C; H2O in water vapor in fuel gas flow, Mierocrystalline cellulose, hemicellulose and xylogen is atomized into weak acid molecule, under roots blower continues guiding, sends into acetic acid and collects tower; Owing to collecting tower wall internal-external temperature difference, allow the weak acid molecule in fuel gas flow be condensed into the globule in tower, under drip to acetic acid and collect tower bottom;
(5) under Roots's machine wind continues guiding, after the fuel gas flow after dedusting, solidifying acid enters the 1st tar collection tower, then enter the 2nd tar collection tower, carry out thermal exchange with water coolant and high-temperature fuel gas air-flow, fuel gas flow temperature drops to 25 ~ 35 DEG C simultaneously;
(6) fuel gas flow collects the filtering layer filtration arranged in tower by 2 tar, allow tiny molecule tar in fuel gas flow, there is repeatedly chance, fully contact with the filtering layer disorderly without chapter, thus got on by absorption, fuel gas flow quality is further purified, sends in gas-holder and store for future use, the waste residue after biomass molding fuel burning is discharged from slag notch.
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| CN201610011114.5A CN105524658A (en) | 2016-01-10 | 2016-01-10 | Biomass fuel gas whole-process segmented purification method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201010630Y (en) * | 2006-11-24 | 2008-01-23 | 太原海力丰科技发展有限公司 | Fluid bed powder coal gasifying reactor |
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| US20090064578A1 (en) * | 2007-06-15 | 2009-03-12 | Theegala Chandra S | Biomass Gasifier System with Low Energy and Maintenance Requirements |
| CN102105568A (en) * | 2007-12-06 | 2011-06-22 | 江西必高生物质能有限公司 | Integrated biomass fuel gas generating system |
| CN202097041U (en) * | 2011-05-11 | 2012-01-04 | 辽宁省能源研究所 | Filler type cyclone dust extractor |
| CN102643673A (en) * | 2012-02-17 | 2012-08-22 | 陈天祥 | Method and device for preparing biomass gas with high calorific value by dry method |
| CN103205285A (en) * | 2013-03-29 | 2013-07-17 | 合肥德博生物能源科技有限公司 | Biomass gas purifying and cooling method |
| CN203881088U (en) * | 2014-05-26 | 2014-10-15 | 兴化市兴昌盛炼钢辅助材料厂 | Carbonized rice hull gas drying system |
-
2016
- 2016-01-10 CN CN201610011114.5A patent/CN105524658A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201010630Y (en) * | 2006-11-24 | 2008-01-23 | 太原海力丰科技发展有限公司 | Fluid bed powder coal gasifying reactor |
| CN201077830Y (en) * | 2007-03-23 | 2008-06-25 | 周泽宇 | Biomass heat pyrolytic air dust removing-washing-selective evaporation-decoking purifying-storage facility |
| US20090064578A1 (en) * | 2007-06-15 | 2009-03-12 | Theegala Chandra S | Biomass Gasifier System with Low Energy and Maintenance Requirements |
| CN102105568A (en) * | 2007-12-06 | 2011-06-22 | 江西必高生物质能有限公司 | Integrated biomass fuel gas generating system |
| CN202097041U (en) * | 2011-05-11 | 2012-01-04 | 辽宁省能源研究所 | Filler type cyclone dust extractor |
| CN102643673A (en) * | 2012-02-17 | 2012-08-22 | 陈天祥 | Method and device for preparing biomass gas with high calorific value by dry method |
| CN103205285A (en) * | 2013-03-29 | 2013-07-17 | 合肥德博生物能源科技有限公司 | Biomass gas purifying and cooling method |
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